The 5965 is a miniature twin-triode primarily designed for service in computer applications. Each triode secyion features a high zero-bias plate current, a sharp-cutoff characteristic, and a separate cathode connection. In addition, the balance of the cutoff characteristic between the two sections is controlled. When used in "on-off' control applcation, the 5965 will maintains its emission capabilities after long periods of operation under cutoff conditions. The heater-cathode construction of the tube is designed for dependable service under conditions of intermittent operation.